Extended Diagnostics Identification With Class 1 Master - Emerson Rosemount 2051 Reference Manual

Reference Manual
00809-0300-4101, Rev BB
Diagnostics
condition
Diagnostics
condition
Module
Temperature
Beyond limits
Sensor
Module
Memory
Failure
No Sensor
Module
Pressure
Updates
No Device
Temperature
Updates
Circuit Board
Memory
Failure
LOI button
stuck
6.4.1

Extended diagnostics identification with Class 1 Master

If using a Class 1 Master to identify Physical Block Diagnostic Extensions, see
Figure 6-2
description for each bit.
Note
A Class 2 Master will automatically decode bits and provide diagnostic names.
Figure 6-1. Extended Diagnostics Identification
Standard diagnostic response
6 bytes
Header byte
0 0 x x x x x x
Troubleshooting
How to identify
Class 1 or 2
Class 2 Master
Master
Physical block
Primary
diagnostic
value status
extension
N/A
Bad, out of
service (OOS)
Sensor
Transducer Block
Bad, sensor
Error
failure,
constant
N/A
Memory Failure
or
Non Volatile N/A
Memory
Integrity Error
LOI Button
N/A
Malfunction
for diagnostic bit information.
Status, slot number,
status specifier
3 Bytes
Temperature
status
Uncertain
N/A
N/A
Bad
N/A
N/A
Table 6-2 and Table 6-3
Extended Diagnostic Data
Device Related
Extended diagnosis
Diagnosis
(vendor specific)
4 Bytes 3 Bytes
Troubleshooting
November 2016
What to do
Recommended action
1. Verify the sensor
temperature is between
–45 and 90 °C.
2. Replace the sensor module.
1. Replace sensor module.
1. Check cable connection
between sensor module and
electronics.
2. Replace electronics.
3. Replace sensor module.
1. Check cable connection
between sensor module and
electronics.
2. Replace electronics.
3. Replace sensor module.
1. Replace electronics.
1. Check if button is stuck
under housing.
2. Replace buttons.
3. Replace electronics.
Figure 6-1 and
list the diagnostic
53